CAM (Cambridge Water Plc)

Report Data Range: For the whole year 2021

Table 1: Quality of water leaving service treatment works – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of works with failures
Nitrite (Total)	A013B	0.1 mg NO2/l	142	0	<0.006	<0.006	0
Totals			142	0

Table 2: Quality of water leaving service treatment works – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of works with failures
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	2,697	0	0	0	0
Total Coliforms (Confirmed)	C001	0 number/100 ml	2,697	0	0	0	0
Totals			5,394	0

Table 3: Quality of water leaving service treatment works – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	2,697	N/A	0	5
Residual Disinfectant – Free	C009	No abnormal change	2,697	N/A	0.08	0.86
Turbidity – Indicator	A002A	1 NTU	2,697	0	<0.1	0.1
Totals			8,091	0

Table 4: Quality of water leaving service reservoirs – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of reservoirs failing standard
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	1,490	0	0	0	0
Total Coliforms (Confirmed)	C001	0 number/100 ml	1,488	0	0	0	0
Totals:			2,978	0

Table 5: Quality of water leaving service reservoirs – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	1,490	N/A	0	18
Residual Disinfectant – Free	C009	No abnormal change	1,490	N/A	0.03	0.2309
Totals:			2,980	0

Table 6: Quality of water leaving bulk supply points – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of supply point with failures
Bromate	F003	10 µg BrO3/l	143	0	<0.8	0.956	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	127	0	0	0.05672	0
Pesticides Aldrin	P002	0.03 µg/l	24	0	<0.007	<0.007	0
Pesticides Atrazine	P004	0.1 µg/l	47	0	0.002	0.019	0
Pesticides Bentazone	P006	0.1 µg/l	32	0	<0.007	0.051	0
Pesticides Bromacil	P086	0.1 µg/l	12	0	<0.003	<0.003	0
Pesticides Chlortoluron	P014	0.1 µg/l	24	0	<0.003	0.007	0
Pesticides Dieldrin	P028	0.03 µg/l	24	0	<0.007	<0.007	0
Pesticides Diuron	P032	0.1 µg/l	28	0	<0.004	0.006	0
Pesticides Heptachlor	P043	0.03 µg/l	32	0	<0.008	<0.008	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	8	0	<0.005	<0.005	0
Pesticides Metaldehyde	P226	0.1 µg/l	16	0	<0.008	<0.008	0
Pesticides Propazine	P066	0.1 µg/l	4	0	<0.002	<0.002	0
Pesticides Propiconazole	P068	0.1 µg/l	8	0	<0.008	<0.008	0
Pesticides Propyzamide	P071	0.1 µg/l	8	0	<0.005	<0.005	0
Pesticides Simazine	P073	0.1 µg/l	77	0	<0.003	0.01	0
Pesticides Trietazine	P132	0.1 µg/l	16	0	<0.004	0.009	0
Totals			630	0

Table 8: Quality of water leaving bulk supply points – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 percentile (representing a minimum)	99 percentile (representing a maximum)
Clostridium Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	142	0	0	0
Gross Alpha	F004	0.1 Bq/l	8	0	<0.02	0.07
Gross Beta	F005	1 Bq/l	8	0	<0.28	<0.28
Totals			158	0

Table 9: Quality of water at consumer’s tap (zones) – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of zones failing standard
1 2-Dichloroethane (Total)	F001	3 µg/l	72	0	<0.12	<0.12	0
Antimony	B008A	5 µg Sb/l	74	0	<0.2	<0.2	0
Arsenic (Total)	B001A	10 µg As/l	74	0	<1	<1	0
Benzene (Total)	F002	1 µg/l	72	0	<0.02	<0.02	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	75	0	<0.003	<0.003	0
Boron	D005A	1 mg B/l	74	0	<0.04	0.077	0
Bromate	F003	10 µg BrO3/l	2	0	<0.8	<0.8	0
Cadmium (Total)	B002	5 µg Cd/l	74	0	<0.12	<0.12	0
Chromium (Total)	B004	50 µg Cr/l	74	0	<0.5	0.9	0
Copper (Total)	A024A	2 mg Cu/l	74	0	<0.008	0.978	0
Cyanide (Total)	B003	50 µg CN/l	74	0	<2	<5	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	1,028	0	0	0	0
Enterococci (Confirmed)	C003	0 number/100 ml	74	0	0	0	0
Fluoride (Total)	A027	1.5 mg F/l	75	0	0.086	0.214	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	74	0	<0.9	5.7	0
Mercury (Total)	B005	1 µg Hg/l	74	0	<0.04	0.05	0
Nickel (Total)	B006A	20 µg Ni/l	74	1	1.1	27.5	1
Nitrate (Total)	A012	50 mg NO3/l	74	0	30	44.3	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	75	0	<0.003	0.006	0
Nitrite/Nitrate formula	A013C	1 mg/l	74	0	0.601	0.887	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	2	0	0.003	0.029	0
Pesticides 2 4-D	P020	0.1 µg/l	1	0	<0.007	<0.007	0
Pesticides 2,4,5-T	P020	0.1 µg/l	1	0	<0.007	<0.007	0
Pesticides Atrazine	P004	0.1 µg/l	2	0	0.003	0.009	0
Pesticides Carbendazim (Total)	P150	0.1 µg/l	1	0	<0.001	<0.001	0
Pesticides Carbetamide	P010	0.1 µg/l	1	0	<0.002	<0.002	0
Pesticides Chlortoluron	P014	0.1 µg/l	1	0	<0.003	<0.003	0
Pesticides Clopyralid	P018	0.1 µg/l	2	0	<0.007	<0.007	0
Pesticides Desethylatrazine	P182	0.1 µg/l	1	0	<0.01	<0.01	0
Pesticides Diuron	P032	0.1 µg/l	1	0	<0.004	<0.004	0
Pesticides Metaldehyde	P226	0.1 µg/l	2	0	<0.008	<0.008	0
Pesticides Metazachlor	P203	0.1 µg/l	1	0	<0.003	<0.003	0
Pesticides Propazine	P066	0.1 µg/l	1	0	<0.002	<0.002	0
Pesticides Propyzamide	P071	0.1 µg/l	1	0	<0.005	<0.005	0
Pesticides Quinmerac	P244	0.1 µg/l	2	0	<0.002	<0.002	0
Pesticides Simazine	P073	0.1 µg/l	1	0	0.013	0.013	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	75	0	0	0.013	0
Selenium (Total)	B009	10 µg Se/l	74	0	<0.8	1.3	0
Trichloroethene & Tetrachloroethene – Sum Of 2 Substances (Total by Calculation)	D009B	10 µg/l	72	0	0	1.73	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	72	0	1.83	20.6	0
Totals			2,676	1

Table 10: Quality of water at consumer’s tap (zones) – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 percentile (representing a minimum)	99 percentile (representing a maximum)	No. of zones failing standard
Aluminium (Total)	A021	200 µg Al/l	74	0	<6	96.9	0
Colour	A001	20 mg/l Pt/Co	350	0	<1	<1	0
Iron (Total)	A022	200 µg Fe/l	74	0	<4	17.2	0
Manganese (Total)	A023	50 µg Mn/l	74	0	<1.7	<1.7	0
Odour	A003	0 Dilution number at 25°C	352	0	0	0	0
Sodium (Total)	A009	200 mg Na/l	74	0	4.2	48.3	0
Taste (Taste Quant)	A004	0 Dilution number at 25°C	352	0	0	0	0
Tetrachloromethane (Total)	D008	3 µg/l	72	0	<0.11	<0.11	0
Turbidity	A002	4 NTU	350	0	<0.1	<0.1647	0
Totals			1,772	0

Table 11: Quality of water at consumer’s tap (zones) – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 percentile (representing a minimum)	99 percentile (representing a maximum)
Ammonium (Total)	A014	0.5 mg NH4/l	350	0	<0.02	0.02645
Chloride	D002A	250 mg Cl/l	74	0	22	75
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	2	0	0	0
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	1,028	1	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	350	N/A	0	177
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	350	0	529.51	723
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	350	0	7.1	7.9
Residual Disinfectant – Total	C010	No abnormal change	1,028	N/A	0.03	0.19
Sulphate	A007	250 mg SO4/l	74	0	23.1	52.8
Total Organic Carbon	A017	No abnormal change	74	N/A	0.4	1.2
Totals			3,680	1